I recently dropped the tank on my '68 250sl to clean and inspect its condition. I purchase the Bill Hirsch tank repair kit with the intention of using it, if needed. After applying a couple of rounds of degreaser to the tank's insides and scrubbing the exterior with a brush, a number of pinholes have appeared on the top of the tank but not the bottom. This car sat for about six years, and I speculate moisture in the fuel condensed on the roof of the tank and slowly ate through. Most of the pinholes are, well, the size of a pin, but a couple are almost as big as keyholes. I have read several recommendations against repair in favor of replacement. Is this a consensus and, if so, what are some good values for procuring this item?